Hi
Did you ever get this fixed? I have the same issue - upgraded from 9.5 to 10.5 on Sunday evening to find it’s not working the next day.
Missing virtual container - it’s killing me at the moment - done everything possible, including uninstall EVERYTHING steinberg related and re-install as well.
Raised a support ticket but there has been no response. Called the number for the support line - connected but no one on the other end (multiple times), Eventually connected to the US one thinking they may be able to help - they told me they can’t as I’m UK based.
Any advice here would be great!!